| Tommy O'Brien | |
| Birth Date: | 1998 5, df=yes |
| Birth Place: | Dublin, Ireland |
| Weight: | 92kg (203lb) |
| Ru Position: | Centre |
| Amatteam1: | UCD |
| Years1: | 2019– |
| Clubs1: | Leinster |
| Apps1: | 23 |
| Points1: | 30 |
| Ru Clubupdate: | 22 April 2023 |
| Repyears1: | 2017–2018 |
| Repteam1: | Ireland U20 |
| Repcaps1: | 15 |
| Reppoints1: | 30 |
| Ru Ntupdate: | 28 March 2021 http://www.itsrugby.fr/joueur-internationale-40439.html |
| School: | Blackrock College |
| University: | University College Dublin |
Tommy O'Brien (born 28 May 1998) is an Irish rugby union player who is currently a member of the Leinster academy. He plays as a centre.
O'Brien attended Blackrock College and played in the Leinster Schools Rugby Senior Cup for the school, as well being a Leinster Schools 110-metre hurdles champion.[1]
O'Brien made his senior competitive debut for Leinster in their round 8 2019–20 Pro14 interprovincial clash against Ulster on 20 December 2019, with O'Brien starting at 13 for Leinster and playing 70 minutes in their 54–42 win against the northern province.[1] [2] O'Brien is 25 points behind Michael Bent on the all time Leinster points list.[3]
O'Brien represented Ireland under-20s between 2017 and 2018, and captained the side during 2018.[4]